Ceramic Watch Chain

Abstract

A ceramic watch chain is disclosed. The ceramic watch chain includes a central connecting piece having on both sides thereof a pair of through holes, an outer connecting piece located outside the central connecting piece and having on both sides thereof insert holes corresponding to the through holes, with a fastening groove being formed outside each of the insert holes and having a diameter larger than that of the insert hole, a fastening pin passing through the through holes to be inserted into the insert holes, and a fixing member coupled to a lower surface of the fastening groove. The invention has no pin insert hole on the back of the outer connecting piece of the watch chain, thus providing an attractive appearance, and reducing the manufacturing cost of the watch chain.

What is claimed is: 
     
         1 . A ceramic watch chain, comprising:
 a central connecting piece having on both sides thereof a pair of through holes;   an outer connecting piece located outside the central connecting piece, and having on both sides thereof insert holes corresponding to the through holes, with a fastening groove being formed outside each of the insert holes and having a diameter larger than that of the insert hole;   a fastening pin passing through the through holes to be inserted into the insert holes; and   a fixing member coupled to a lower surface of the fastening groove.   
     
     
         2 . A ceramic watch chain, comprising:
 a central connecting piece having on both sides thereof a pair of through holes;   an inner connecting piece located outside the central connecting piece, and having on both sides thereof connecting holes corresponding to the through holes;   an outer connecting piece located outside the inner connecting piece, and having on both sides thereof insert holes corresponding to the connecting holes, with a fastening groove being formed outside each of the insert holes and having a diameter larger than that of the insert hole;   a fastening pin passing through the through holes and the connecting holes to be inserted into the insert holes; and   a fixing member coupled to a lower surface of the fastening groove.   
     
     
         3 . The ceramic watch chain as claimed in  claim 1  or  2 , wherein the fixing member comprises:
 a cylindrical body portion; and 
 a conical inclined portion provided on an upper portion of the body portion, 
 the body portion has a diameter corresponding to that of the insert hole, and the body portion is lower in height than the insert hole. 
 
     
     
         4 . The ceramic watch chain as claimed in  claim 3 , wherein the fastening pin is a cylindrical shell having on both ends thereof a plurality of cut slits, and outer circumferences of both ends of the fastening pin are bent outwards in an inclination direction of the inclined portion to be caught by an interior of the fastening groove. 
     
     
         5 . The ceramic watch chain as claimed in  claim 3 , wherein an adhesive member is inserted in a space between an outer circumference of the body portion and an inner circumference of the fastening groove. 
     
     
         6 . The ceramic watch chain as claimed in  claim 1  or  2 , wherein each of the outer connecting piece and the central connecting piece is made of a ceramic material. 
     
     
         7 . The ceramic watch chain as claimed in  claim 1  or  2 , wherein the fastening pin is made of a stainless steel material.